Description
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 10.7.0, 10.5.0 – ≤ 10.5.3, 9.11.0 – ≤ 9.11.12 | 10.8.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | govulncheck-vulndb | 0.0.20250612T141001-1.1 | openSUSE-SU-2025:15225-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | >= 9.0.0-rc1+incompatible, < 9.11.13+incompatible · >= 10.0.0-rc1+incompatible, < 10.5.4+incompatible · >= 10.6.0-rc1+incompatible, < 10.7.1+incompatible | 9.11.13+incompatible, 10.5.4+incompatible, 10.7.1+incompatible | GO-2025-3728 |
| Go | github.com/mattermost/mattermost-server/v5 | all versions | — | GO-2025-3728 |
| Go | github.com/mattermost/mattermost-server/v6 | all versions | — | GO-2025-3728 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.6.0-rc1, < 10.7.1 | 10.7.1 | GHSA-86jg-35xj-3vv5 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.0.0-rc1, < 10.5.4 | 10.5.4 | GHSA-86jg-35xj-3vv5 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.0.0-rc1, < 9.11.13 | 9.11.13 | GHSA-86jg-35xj-3vv5 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250414154356-6f33b721de76 | 8.0.0-20250414154356-6f33b721de76 | GHSA-86jg-35xj-3vv5 |
Advisories 2
- openSUSE-SU-2025:15225-1 govulncheck-vulndb-0.0.20250612T141001-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- WID-SEC-2025-0905 Mattermost: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 11, 2025